(Solved): Take a look at this diagram, which shows intracellular action potentials from cardiac muscle cells. ...

Take a look at this diagram, which shows intracellular action potentials from cardiac muscle cells. Please mark all true statements only. -These action potentials would be prolonged by sympathetic stimulation. -The length of the action potentials prevents muscular tetanus. -Action potentials are prolonged in comparison with skeletal muscle. -Stretch of a cardiac cell increases the force of contraction. -The plateau phases in the action potentials indicate increased Ca+ permeability. Thank you